Spectrum of surface plasmons excited by spontaneous quantum dot transitions

Journal Article · Thu Aug 15 00:00:00 EDT 2013 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776113100099· OSTI ID:22210519

Dorofeenko, A. V.; Vinogradov, A. P. ^[1]; Lisyansky, A. A. ^[2]

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1. Russian Academy of Sciences, Institute of Theoretical and Applied Electrodynamics (Russian Federation)
2. Queens College of the City University of New York, Department of Physics (United States)

We consider quantum fluctuations of near fields of a quantum emitter (two-level system (TLS) with population inversion sustained by incoherent pumping) in the near-field zone of a plasmon (metallic) nanoparticle. The spectrum of surface plasmons excited by spontaneous transitions in the quantum emitter is obtained below the lasing threshold of such a system (spaser) in the approximation of a small number of plasmons. It is shown that the relaxation rate is the sum of the quantum emitter's rates of relaxation to its thermal reservoir and the plasmon cavity. The resulting dependence of the average number of plasmons on the pump intensity indicates the nonthreshold nature of the process.

• OSTI ID: 22210519
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 117, Issue 2; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
FLUCTUATIONS
PLASMONS
POPULATION INVERSION
PUMPING
PUMPS
QUANTUM DOTS
RELAXATION
SPECTRA
SURFACES